90906040

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{239}}^1\times {\mathrm{257}}^1$

素因数の和:544

約数の個数: 64

約数和(自身を含む): 211766400

約数和(自身を除く): 120860360

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 239, 257, 296, 370, 478, 514, 740, 956, 1028, 1195, 1285, 1480, 1912, 2056, 2390, 2570, 4780, 5140, 8843, 9509, 9560, 10280, 17686, 19018, 35372, 38036, 44215, 47545, 61423, 70744, 76072, 88430, 95090, 122846, 176860, 190180, 245692, 307115, 353720, 380360, 491384, 614230, 1228460, 2272651, 2456920, 4545302, 9090604, 11363255, 18181208, 22726510, 45453020, 90906040]

約数ペア:

[(1, 90906040), (2, 45453020), (4, 22726510), (5, 18181208), (8, 11363255), (10, 9090604), (20, 4545302), (37, 2456920), (40, 2272651), (74, 1228460), (148, 614230), (185, 491384), (239, 380360), (257, 353720), (296, 307115), (370, 245692), (478, 190180), (514, 176860), (740, 122846), (956, 95090), (1028, 88430), (1195, 76072), (1285, 70744), (1480, 61423), (1912, 47545), (2056, 44215), (2390, 38036), (2570, 35372), (4780, 19018), (5140, 17686), (8843, 10280), (9509, 9560)]